<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/login.css">
</head>

<body>
    <!-- 导航栏 -->
    <div class="nav">
        网页聊天
    </div>
    <!-- 主窗口区 -->
    <div class="login-container">
        <div class="login-dialog">
            <h3>注册</h3>
            <div class="row">
                <span>用户名</span>
                <input type="text" id="username">
            </div>
            <div class="row">
                <span>密码</span>
                <input type="password" id="password">
            </div>
            <div class="row">
                <button id="submit">注册</button>
            </div>
        </div>
    </div>

    <!-- 引入jquery -->
    <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
    <!-- 实现前后端交互逻辑 -->
    <script>
        let submitButton = document.querySelector('#submit');
        submitButton.onclick = function () {
            //1.先获取到用户输入的用户名和密码
            let username = document.querySelector('#username').value;
            let password = document.querySelector('#password').value;
            if (username == '' || password == '') {
                alert("您输入的用户名或者密码为空");
                return;
            }
            //2.发送ajax请求
            $.ajax({
                url: '/register',
                type: 'post',
                data: {
                    username: username,
                    password: password
                },
                success: function (body) {
                    //3.处理响应
                    //此处的body相当于相应的user对象
                    if (body != null && body.userId > 0) {
                        //注册成功
                        alert("注册成功！");
                        //跳转到客户端主页面

                        location.assign('/login.html');
                    } else {
                        alert("注册失败！");
                    }
                }

            });
        }
    </script>
</body>

</html>